Powders For 8mm French Revolver

[Good Cheer]

When loading for the Model 1892 French 8mm revolver, what powders have worked well for you?
Bullseye and tiny little bits of Unique work, but what else have you tried?
Tite Group?
Lil Gun?
AA N0.5?

Does anything noncorrosive allow for a bulked up case?

[Battis]

I tried 4.6 grs Unique (with 115 gr cast bullet) and 2.8 grs Bullseye. Nothing else.
I didn't have much luck shooting mine. I used 32/20 cases, but every cases ballooned out near the neck.
I tried Fiocchi 8mm ammo, but it's too large for the gun.
I think I might revisit it soon.